On Thursday,31 July 2014 01:42, OSAMAM@microsoft.com wrote:
> After applying an updated value of the HTTP/2 setting
> SETTINGS_HEADER_TABLE_SIZE that changes the maximum size of the
> header table used by the encoder, the encoder MUST signal this change
> via an encoding context update (see Section 7.3). ...
>
> Why is it a 'MUST' for the encoder to emit a Context Update opcode? ...
I agree this is confusing.
For example, suppose the encoder is only using 512 for the table size out of the 4096 default value for SETTINGS_HEADER_TABLE_SIZE.
Now suppose the decoder lowers SETTINGS_HEADER_TABLE_SIZE to 1024, why 'MUST' the encoder emit a Context Update opcode since the new setting doesn't force the encoder to lower the table size and therefore should have no effect?
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